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/boot shared between different Linux installs?

From: drsmith
Subject: /boot shared between different Linux installs?
Date: Thu, 21 Apr 2016 15:00:55 -0400

I'm currently working on installing a server with two logical drives in it: sda and sdb.  Each logical drive is going to get an installation of Linux and each install has a different purpose.  The first install is mostly used for recovery scenarios while the second would be the production installation.

The issue I've run into is that I have two /boot partitions, but the MBR of the first disk only points to one grub.conf file.  Manually keeping these synchronized isn't something I'd like to do if I could avoid it.

Either I have to have one shared /boot partition that gets mounted by both installations or I have to figure out how to get grub to chainload itself from the second drive.  In the chainload scenario, you would see two menus where choosing the install on the second hard drive gives you the menu for that installation.

I've run this through the stack-exchange sites and I've tried many searches over the past few days, but information on this seems to be rather scarce.  Maybe I'm not thinking of a better possibility.  Any insight you could offer would be greatly appreciated.


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